For a 2000 sq ft Type II dry-cleaning system, the minimum exhaust flow is at least how many CFM?

For a 2000 sq ft Type II dry-cleaning system, the minimum exhaust flow is at least how many CFM?

• A. 1500 CFM
• B. 2000 CFM
• C. 2500 CFM
• D. 3000 CFM

Answer: (B)

For Type II dry-cleaning systems, the ventilation requirement is commonly tied to the area being ventilated. The practical rule of thumb uses about 1 CFM per square foot of floor area served by the system. This ensures enough air is drawn away to capture and remove solvent vapors produced during cleaning, helping maintain safe air quality and control odors. Applying that to a 2000 square foot space gives a minimum exhaust flow of 2000 CFM. This rate strikes a balance between effectively exhausting solvents and avoiding unnecessary energy loss from over-ventilation. Choosing a much lower flow (for example, 1500 CFM) could under-ventilate the space and allow solvent vapors to accumulate, while higher values (such as 2500 or 3000 CFM) lead to extra fan energy costs without additional safety benefits beyond meeting the standard minimum. Always verify the exact requirement with local codes or the AHJ, but 1 CFM per square foot is a commonly used guideline for Type II dry-cleaning setups.

For Type II dry-cleaning systems, the ventilation requirement is commonly tied to the area being ventilated. The practical rule of thumb uses about 1 CFM per square foot of floor area served by the system. This ensures enough air is drawn away to capture and remove solvent vapors produced during cleaning, helping maintain safe air quality and control odors.

Applying that to a 2000 square foot space gives a minimum exhaust flow of 2000 CFM. This rate strikes a balance between effectively exhausting solvents and avoiding unnecessary energy loss from over-ventilation.

Choosing a much lower flow (for example, 1500 CFM) could under-ventilate the space and allow solvent vapors to accumulate, while higher values (such as 2500 or 3000 CFM) lead to extra fan energy costs without additional safety benefits beyond meeting the standard minimum. Always verify the exact requirement with local codes or the AHJ, but 1 CFM per square foot is a commonly used guideline for Type II dry-cleaning setups.